Roland Rabien wrote:
What type of engine? Cavitation maybe?

6 cylinder Perkins diesel inboard.


Ouch, kinda sounds like it could be cavitation, it happened to my diesel
truck. It was running fine but loosing coolant and I couldn't find a leak.
Then it hydrolocked, coolant was leaking through the cylinder walls.

A few links to check out, must are about trucks, but I assume it could
happen to boats too:

http://www.freeautoadvice.com/diesel/cav.html
http://www.thedieselstop.com/content...ion%20Analysis
http://www.thedieselstop.com/content...on%20Diagnosis




All the above Chuck but also, suspect a leaky injector, they can drip
fuel, even more so if you had full tanks for your trip.

Please tell us the outcome of the post Perkum.

K